/* $OpenBSD: dev.h,v 1.26 2020/06/12 15:40:18 ratchov Exp $ */ /* * Copyright (c) 2008-2012 Alexandre Ratchov * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef DEV_H #define DEV_H #include "abuf.h" #include "dsp.h" #include "siofile.h" #include "dev_sioctl.h" #define CTLADDR_SLOT_LEVEL(n) (n) #define CTLADDR_MASTER (DEV_NSLOT) #define CTLADDR_END (DEV_NSLOT + 1) /* * audio stream state structure */ struct slotops { void (*onmove)(void *); /* clock tick */ void (*onvol)(void *); /* tell client vol changed */ void (*fill)(void *); /* request to fill a play block */ void (*flush)(void *); /* request to flush a rec block */ void (*eof)(void *); /* notify that play drained */ void (*exit)(void *); /* delete client */ }; struct ctlops { void (*exit)(void *); /* delete client */ void (*sync)(void *); /* description ready */ }; struct slot { struct slotops *ops; /* client callbacks */ struct slot *next; /* next on the play list */ struct dev *dev; /* device this belongs to */ struct opt *opt; /* config used */ void *arg; /* user data for callbacks */ struct aparams par; /* socket side params */ struct { int weight; /* dynamic range */ unsigned int vol; /* volume within the vol */ struct abuf buf; /* socket side buffer */ int bpf; /* byte per frame */ int nch; /* number of play chans */ struct cmap cmap; /* channel mapper state */ struct resamp resamp; /* resampler state */ struct conv dec; /* format decoder params */ int join; /* channel join factor */ int expand; /* channel expand factor */ void *resampbuf, *decbuf; /* tmp buffers */ } mix; struct { struct abuf buf; /* socket side buffer */ int prime; /* initial cycles to skip */ int bpf; /* byte per frame */ int nch; /* number of rec chans */ struct cmap cmap; /* channel mapper state */ struct resamp resamp; /* buffer for resampling */ struct conv enc; /* buffer for encoding */ int join; /* channel join factor */ int expand; /* channel expand factor */ void *resampbuf, *encbuf; /* tmp buffers */ } sub; int xrun; /* underrun policy */ int skip; /* cycles to skip (for xrun) */ #define SLOT_BUFSZ(s) \ ((s)->appbufsz + (s)->dev->bufsz / (s)->dev->round * (s)->round) int appbufsz; /* slot-side buffer size */ int round; /* slot-side block size */ int rate; /* slot-side sample rate */ int delta; /* pending clock ticks */ int delta_rem; /* remainder for delta */ int mode; /* MODE_{PLAY,REC} */ #define SLOT_INIT 0 /* not trying to do anything */ #define SLOT_START 1 /* buffer allocated */ #define SLOT_READY 2 /* buffer filled enough */ #define SLOT_RUN 3 /* buffer attached to device */ #define SLOT_STOP 4 /* draining */ int pstate; #define SLOT_NAMEMAX 8 char name[SLOT_NAMEMAX]; /* name matching [a-z]+ */ unsigned int unit; /* instance of name */ unsigned int serial; /* global unique number */ unsigned int vol; /* current (midi) volume */ unsigned int id; /* process id */ }; struct opt { struct opt *next; #define OPT_NAMEMAX 11 char name[OPT_NAMEMAX + 1]; int maxweight; /* max dynamic range for clients */ int pmin, pmax; /* play channels */ int rmin, rmax; /* recording channels */ int mmc; /* true if MMC control enabled */ int dup; /* true if join/expand enabled */ int mode; /* bitmap of MODE_XXX */ }; /* * subset of channels of a stream */ struct ctl { struct ctl *next; #define CTL_NONE 0 /* deleted */ #define CTL_NUM 2 /* number (aka integer value) */ #define CTL_SW 3 /* on/off switch, only bit 7 counts */ #define CTL_VEC 4 /* number, element of vector */ #define CTL_LIST 5 /* switch, element of a list */ unsigned int type; /* one of above */ unsigned int addr; /* control address */ #define CTL_NAMEMAX 16 /* max name lenght */ char func[CTL_NAMEMAX]; /* parameter function name */ char group[CTL_NAMEMAX]; /* group aka namespace */ struct ctl_node { char name[CTL_NAMEMAX]; /* stream name */ int unit; } node0, node1; /* affected channels */ #define CTL_DEVMASK (1 << 31) #define CTL_SLOTMASK(i) (1 << (i)) unsigned int val_mask; unsigned int desc_mask; unsigned int refs_mask; unsigned int maxval; unsigned int curval; int dirty; }; struct ctlslot { struct ctlops *ops; void *arg; struct dev *dev; unsigned int mask; unsigned int mode; }; /* * audio device with plenty of slots */ struct dev { struct dev *next; struct slot *slot_list; /* audio streams attached */ struct opt *opt_list; struct midi *midi; /* * audio device (while opened) */ struct dev_sio sio; struct dev_sioctl sioctl; struct aparams par; /* encoding */ int pchan, rchan; /* play & rec channels */ adata_t *rbuf; /* rec buffer */ adata_t *pbuf; /* array of play buffers */ #define DEV_PBUF(d) ((d)->pbuf + (d)->poffs * (d)->pchan) int poffs; /* index of current play buf */ int psize; /* size of play buffer */ struct conv enc; /* native->device format */ struct conv dec; /* device->native format */ unsigned char *encbuf; /* buffer for encoding */ unsigned char *decbuf; /* buffer for decoding */ /* * preallocated audio sub-devices */ #define DEV_NSLOT 8 struct slot slot[DEV_NSLOT]; unsigned int serial; /* for slot allocation */ /* * current position, relative to the current cycle */ int delta; /* * desired parameters */ unsigned int reqmode; /* mode */ struct aparams reqpar; /* parameters */ int reqpchan, reqrchan; /* play & rec chans */ unsigned int reqbufsz; /* buffer size */ unsigned int reqround; /* block size */ unsigned int reqrate; /* sample rate */ unsigned int hold; /* hold the device open ? */ unsigned int autovol; /* auto adjust playvol ? */ unsigned int refcnt; /* number of openers */ #define DEV_NMAX 16 /* max number of devices */ unsigned int num; /* device serial number */ #define DEV_CFG 0 /* closed */ #define DEV_INIT 1 /* stopped */ #define DEV_RUN 2 /* playin & recording */ unsigned int pstate; /* one of above */ struct name *path_list; /* * actual parameters and runtime state (i.e. once opened) */ unsigned int mode; /* bitmap of MODE_xxx */ unsigned int bufsz, round, rate; unsigned int prime; /* * MIDI time code (MTC) */ struct { unsigned int origin; /* MTC start time */ unsigned int fps; /* MTC frames per second */ #define MTC_FPS_24 0 #define MTC_FPS_25 1 #define MTC_FPS_30 3 unsigned int fps_id; /* one of above */ unsigned int hr; /* MTC hours */ unsigned int min; /* MTC minutes */ unsigned int sec; /* MTC seconds */ unsigned int fr; /* MTC frames */ unsigned int qfr; /* MTC quarter frames */ int delta; /* rel. to the last MTC tick */ int refs; } mtc; /* * MIDI machine control (MMC) */ #define MMC_STOP 1 /* stopped, can't start */ #define MMC_START 2 /* attempting to start */ #define MMC_RUN 3 /* started */ unsigned int tstate; /* one of above */ unsigned int master; /* software vol. knob */ unsigned int master_enabled; /* 1 if h/w has no vo. knob */ /* * control */ struct ctl *ctl_list; #define DEV_NCTLSLOT 8 struct ctlslot ctlslot[DEV_NCTLSLOT]; }; extern struct dev *dev_list; void dev_log(struct dev *); void dev_abort(struct dev *); int dev_reopen(struct dev *); struct dev *dev_new(char *, struct aparams *, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int); struct dev *dev_bynum(int); void dev_del(struct dev *); void dev_adjpar(struct dev *, int, int, int); int dev_init(struct dev *); void dev_done(struct dev *); int dev_ref(struct dev *); void dev_unref(struct dev *); int dev_getpos(struct dev *); unsigned int dev_roundof(struct dev *, unsigned int); /* * interface to hardware device */ void dev_onmove(struct dev *, int); void dev_cycle(struct dev *); /* * midi & midi call-backs */ void dev_mmcstart(struct dev *); void dev_mmcstop(struct dev *); void dev_mmcloc(struct dev *, unsigned int); void dev_master(struct dev *, unsigned int); void dev_midi_vol(struct dev *, struct slot *); /* * sio_open(3) like interface for clients */ void slot_log(struct slot *); struct slot *slot_new(struct dev *, struct opt *, unsigned int, char *, struct slotops *, void *, int); void slot_del(struct slot *); void slot_setvol(struct slot *, unsigned int); void slot_start(struct slot *); void slot_stop(struct slot *); void slot_read(struct slot *); void slot_write(struct slot *); /* * control related functions */ void ctl_log(struct ctl *); struct ctlslot *ctlslot_new(struct dev *, struct ctlops *, void *); void ctlslot_del(struct ctlslot *); int dev_setctl(struct dev *, int, int); int dev_onval(struct dev *, int, int); int dev_nctl(struct dev *); void dev_label(struct dev *, int); struct ctl *dev_addctl(struct dev *, char *, int, int, char *, int, char *, char *, int, int, int); void dev_rmctl(struct dev *, int); int dev_makeunit(struct dev *, char *); void dev_ctlsync(struct dev *); #endif /* !defined(DEV_H) */